Well, this'll definately sound crazy to anyone who doesn't know us, but...
My ex told me he'd let me hide behind him if a bigfoot came after us (don't ask, lol), and I told him that I'd run away and let it eat him -- but that I really couldn't run away and leave him there alone. And he asked why, and I said 'because I'd feel guilty, and I don't forget the past easily'. To which he said 'thank you for saving me from the sasquatch'.
Haha. I feel crazy in a good way.